/*
 * Copyright (C) 2010 Andrey Yeremenok (eav1986__at__gmail__com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and limitations under the License.
 */

/**
 *
 */
package org.taskmonitor.main;

/**
 * Observes the task collection of the {@link TaskQueue}.
 *
 * @author aeremenok 2010
 */
public interface TaskQueueListener
{
    /**
     * Called by the {@link TaskQueue} when tasks are started, completed or interrupted
     *
     * @param taskQueueEvent contains an old and a new collection of runnig tasks
     */
    void taskQueueChanged( TaskQueueEvent taskQueueEvent );
}
